A hacker breached TeleMessage, an Israeli company providing modified messaging apps for U.S. government archiving, exposing customer data including direct messages and group chats. The breach revealed vulnerabilities in the app, allowing access to unencrypted archived chats. Data from Customs and Border Protection, Coinbase, and other entities were compromised. The hacker exploited the system in about 15-20 minutes, highlighting risks associated with archiving features on end-to-end encrypted apps like Signal.